American Dryer Corp. AD-25 Installation manual

AD-25 Installation Manual
Phase 7 Microprocessor and Timer Models
WARNING: For your safety the information
in this manual must be followed to
minimize the risk of fire or explosion or to
prevent property damage, personal injury
or death.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch;
do not use any phone in your
building.
• Clear the room, building or area of
all occupants.
• Immediately call your gas supplier
from a neighbor’s phone. Follow
the gas supplier’s instructions.
• If you cannot reach your gas
supplier, call the fire department.
— Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
AVERTISSEMENT: Assurez-vous de bien
suivre les instructions données dans cette
notice pour réduire au minimum le risque
d’incendie ou d’explosion ou pour éviter
tout dommage matériel, toute blessure ou
la mort.
— Ne pas entreposer ni utiliser d’essence
ni d’autres vapeurs ou liquides
inflammables à proximité de cet
appareil ou de tout autre appareil.
— QUE FAIRE SI VOUS SENTEZ UNE
ODEUR DE GAZ:
• Ne pas tenter d’allumer d’appareils.
• Ne touchez à aucun interrupteur.
Ne pas vous servir des téléphones
se trouvant dans le bâtiment.
• Évacuez la pièce, le bâtiment ou la
zone.
• Appelez immédiatement votre
fournisseur de gaz depuis un voisin.
Suivez les instructions du
fournisseur.
• Si vous ne pouvez rejoindre le
fournisseur de gaz, appelez le
service des incendies.
— L’installation et l’entretien doivent être
assurés par un installateur ou un service
d’entretien qualifié ou par le fournisseur
de gaz.
American Dryer Corporation
88 Currant Road
Fall River MA 02720-4781 USA
Telephone: (508) 678-9000 / Fax: (508) 678-9447
e-mail: techsupport@amdry.com
www.amdry.com
ADC Part No. 113245
Retain This Manual in a Safe Place for Future Reference
This product embodies advanced concepts in engineering, design, and safety. If this product is properly
maintained, it will provide many years of safe, efficient, and trouble free operation.
Only qualified technicians should service this equipment.
OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation
manual included with the dryer.
The following “FOR YOUR SAFETY” caution must be posted near the dryer in a prominent location.
FOR YOUR SAFETY
POUR VOTRE SÉCURITÉ
Do not store or use gasoline
or other flammable vapors
and liquids in the vicinity of
this or any other appliance.
Ne pas entreposer ni utiliser d’essence
ni d’autres vapeurs ou liquides
inflammables à proximité de cet
appareil ou de tout autre appareil.
We have tried to make this manual as complete as possible and hope you will find it useful. The manufacturer
reserves the right to make changes from time to time, without notice or obligation, in prices, specifications,
colors, and material, and to change or discontinue models. The illustrations included in this manual may not
depict your particular dryer exactly.
IMPORTANT
For your convenience, log the following information:
AD-25
DATE OF PURCHASE _______________________________________________________ MODEL NO. _______________
RESELLER’S NAME __________________________________________________________________________________
Serial Number(s) ____________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
Replacement parts can be obtained from your reseller or the ADC factory. When ordering replacement parts from the
factory, you can FAX your order to ADC at (508) 678-9447 or telephone your order directly to the ADC Parts Department at
(508) 678-9000. Please specify the dryer model number and serial number in addition to the description and part number,
so that your order is processed accurately and promptly.
“IMPORTANT NOTE TO PURCHASER”
Information must be obtained from your local gas supplier on the
instructions to be followed if the user smells gas. These instructions
must be posted in a prominent location near the dryer.
IMPORTANT
You must disconnect and lockout the electric
supply and the gas supply or the steam supply
before any covers or guards are removed from
the machine to allow access for cleaning,
adjusting, installation, or testing of any equipment
per OSHA standards.
Please observe all safety precautions displayed
on the equipment and/or specified in the
installation manual included with the dryer.
CAUTION
Dryer(s) should never be left unattended while in
operation.
“Caution: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper operation.”
«Attention: Lor des opérations d’entretien des
commandes étiqueter tous fils avant de les
déconnecter. Toute erreur de câblage peut étre
une source de danger et de panne.»
Table of Contents
Safety Precautions .............................. 4
Specifications ...................................... 5
Installation Procedures ....................... 7
Location Requirements .......................................................... 7
Unpacking/Setting Up ............................................................. 7
Dryer Enclosure Requirements ............................................. 8
Fresh Air Supply Requirements ............................................. 8
Exhaust Requirements ........................................................... 9
Electrical Information ............................................................ 11
Gas Information .....................................................................14
Steam Information .................................................................16
Water Information ..................................................................18
Preparation for Operation/Start-Up ......................................20
Preoperational Tests .............................................................20
Preoperational Instructions ..................................................21
Shutdown Instructions ..........................................................22
Service/Parts Information ................. 23
Service ....................................................................................23
Parts ........................................................................................23
Warranty Information ........................ 23
Returning Warranty Cards ....................................................23
Warranty ..................................................................................23
Returning Warranty Parts ......................................................23
Routine Maintenance ......................... 24
WARNING
Children should not be allowed to play on or near
the dryer(s). Children should be supervised if near
dryer(s) in operation.
Under no circumstances should the dryer door
switch(es), lint door/drawer switch(es), or heat
safety circuit(s) ever be disabled.
The dryer must never be operated with any of the
back guards, outer tops, or service panels
removed. Personal injury or fire could result.
The dryer must never be operated without the lint
filter/screen in place, even if an external lint
collection system is used.
FOR YOUR SAFETY
Do not dry mop heads in the dryer. Do not use
dryer in the presence of dry cleaning fumes.
The dryers must not be installed or stored in
an area where it will be exposed to water
and/or weather.
The wiring diagram for the dryer is located in
the front electrical control box area.
Cleaning .................................................................................24
Adjustments ...........................................................................24
Lubrication..............................................................................24
Procedure for Functional Check
of Replacement Components ............ 25
Data Label Information ...................... 26
Manual Reset Burner Hi-Limit
Instructions ........................................ 27
Phase 7 ..................................................................................27
Mechanical Timer ..................................................................27
ACRONYMS
D.M.S.
W.C.
DSI
HSI
L.P.
HVAC
CW
CCW
L.C.D.
L.E.D.
R.M.A.
OSHA
Drill Measurement Size
Water Column
Direct Spark Ignition
Hot Surface Ignition
Liquid Propane
Heating, Ventilating, and Air Conditioning
Clockwise
Counterclockwise
Liquid Crystal Display
Light Emitting Diode
Return Material Authorization
Occupational Safety and Health Administration
Safety Precautions __________________
Warning
!
For your safety, the information in this manual
must be followed to minimize the risk of fire or
explosion or to prevent property damage, personal injury,
or loss of life.
The dryer must never be operated with any of the back
guards, outer tops, or service panels removed. Personal
injury or fire could result.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Purchaser and user should consult the local gas supplier for
proper instructions to be followed in the event the user smells
gas. The instructions should be posted in a prominent
location.
What To Do If You Smell Gas:
For personal safety, the dryer must be electrically grounded
in accordance with local codes and/or the National Electrical
Code ANSI/NFPA NO. 70-LATEST EDITION or in Canada, the
Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or
LATEST EDITION.
Note
!
Under no circumstances should the dryer door switch(es),
lint door/drawer switch(es), or heat safety circuit(s) ever be
disabled.
Warning
!
Personal injury or fire could result should the dryer
door switch, lint door/drawer, or heat safety circuit
ever be disabled.
This dryer is not to be used in the presence of dry cleaning
solvents or fumes.
• Do not try to light any appliance.
• Do not touch any electrical switch.
Remove articles from the dryer as soon as the drying cycle
has been completed.
• Do not use any phone in your building.
• Clear the room, building, or area of all occupants.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency, or gas supplier.
Dryers must be exhausted to the outdoors.
Although the manufacturer produces a very versatile dryer,
there are some articles that, due to fabric composition or
cleaning method, should not be dried in it.
!
Failure to electrically ground the dryer properly will
void the warranty.
Warning
Dry only water washed fabrics. Do not dry articles
spotted or washed in dry cleaning solvents, a
combustible detergent, or “all purpose” cleaner. Explosion
could result.
Do not dry rags or articles coated or contaminated with
gasoline, kerosene, oil, paint, or wax. Explosion could
result.
Do not dry mop heads. Contamination by wax or
flammable solvents will create a fire hazard.
Do not use heat for drying articles that contain plastic,
foam, sponge rubber, or similarly textured rubber
materials. Drying in a heated tumbler may damage
plastics or rubber and also may be a fire hazard.
A program should be established for the inspection and
cleaning of lint in the burner area, exhaust ductwork, and
area around the back of the dryer. The frequency of inspection
and cleaning can best be determined from experience at
each location.
Warning
!
hazard.
Articles left in the dryer after the drying and cooling
cycles have been completed can create a fire
Do not operate steam dryers with more than 125 psi (8.62
bar) steam pressure. Excessive steam pressure can damage
steam coil and/or harm personnel.
Replace leaking flexible hoses or other steam fixtures
immediately. Do not operate the dryer with leaking flexible
hoses. Personal injury may result.
Read and follow all caution and direction labels attached to
the dryer.
For safety, proper operation, and optimum performance, the
dryer must not be operated with a load less than sixty-six
percent (66%), 17 lb (7.7 kg) of its rated capacity.
Warning
!
You must disconnect and lockout the electric
supply and the gas supply or the steam supply
before any covers or guards are removed from the
machine to allow access for cleaning, adjusting,
installation, or testing of any equipment per OSHA
standards.
!
Important
The dryer must be installed in a location/
environment, which the ambient temperature
remains between 40° F (4.44° C) and 130° F (54.44° C).
Warning
!
hazard.
4
The collection of lint in the burner area and
exhaust ductwork can create a potential fire
American Dryer Corp.
113245-4
Specifications ___________________________________________________________________
N / A
21-1/2”
54.61 cm
N / A
3/4”-11.5 NH
14 / 30
45 / 51
120-460v
1,3ø 2,3,4w
50/60 Hz
190.5 kg
420 lb
207.7 kg
458 lb
17 cmm
600 cfm
78,000 Btu/hr
19,650 kcal/hr
20.32 cm
8”
Electric
N / A
N / A
1/2” M.N.P.T.
N / A
N / A
Shaded areas are stated in metric equivalents
!
11.3 kg
83.2 cm
48.3 cm
262.214 L
0.373 kW
25 lb
32-3/4”
19”
9.26 cu ft
1/2 hp
Steam
Gas
MAXIMUM CAPACITY (DRY WEIGHT)
TUMBLER DIAMETER
TUMBLER DEPTH
TUMBLER VOLUME
TUMBLER/DRIVE MOTOR
BLOWER/FAN MOTOR
DOOR OPENING (DIAMETER)
DOOR SILL HEIGHT
WATER CONNECTION
DRYERS PER 20’/40’ CONTAINER
DRYERS PER 48’/53’ TRUCK
VOLTAGE AVAILABLE
APPROXIMATE NET WEIGHT
APPROXIMATE SHIPPING WEIGHT
AIRFLOW
HEAT INPUT
EXHAUST CONNECTION (DIAMETER)
COMPRESSED AIR CONNECTION
COMPRESSED AIR VOLUME
INLET PIPE CONNECTION
VOLTAGE AVAILABLE
APPROXIMATE NET WEIGHT
APPROXIMATE SHIPPING WEIGHT
AIRFLOW
EXHAUST CONNECTION (DIAMETER)
COMPRESSED AIR CONNECTION
COMPRESSED AIR VOLUME
OVEN SIZE
kW
Btu/hr
kcal/hr
VOLTAGE AVAILABLE
APPROXIMATE NET WEIGHT
APPROXIMATE SHIPPING WEIGHT
AIRFLOW
STEAM CONSUMPTION
OPERATING STEAM PRESSURE
EXHAUST CONNECTION (DIAMETER)
COMPRESSED AIR CONNECTION
COMPRESSED AIR VOLUME
BOILER HORSEPOWER (NORMAL LOAD)
SUPPLY CONNECTION
RETURN CONNECTION
2/10/04
Note
The manufacturer reserves the right to make changes in specifications at any time without notice or obligation.
113245-4
www.amdry.com
5
6
American Dryer Corp.
113245-4
Installation Procedures _____________
Important
!
Installation should be performed by competent technicians
in accordance with local and state codes. In the absence of
these codes, the installation must conform to applicable
American National Standards: ANSI Z223.1-LATEST EDITION
(National Fuel Gas Code) or ANSI/NFPA NO. 70-LATEST
EDITION (National Electrical Code) or in Canada, the
installation must conform to applicable Canadian Standards:
CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2M91 (L.P. Gas) or LATEST EDITION (for General Installation
and Gas Plumbing) or Canadian Electrical Codes Parts 1 &
2 CSA C22.1-1990 or LATEST EDITION (for Electrical
Connections).
The dryer must be installed in a location/
environment, which the ambient temperature
remains between 40° F (4.44° C) and 130° F (54.44° C).
Location Requirements ______________
The dryer can be moved to its final location while still attached
to the skid or with the skid removed. To remove the skid from
the dryer, locate and remove the 4 bolts securing the base of
the dryer to the wooden skid. 2 are at the rear base (remove
the back panel for access) and 2 are located in the bottom of
the lint chamber. (Remove the lint drawer/door for access.)
Before installing the dryer, be sure the location conforms to
local codes and ordinances. In the absence of such codes
or ordinances the location must conform with the National
Fuel Gas Code ANSI.Z223.1 LATEST EDITION, or in Canada,
the installation must conform to applicable Canadian
Standards: CAN/CGA-B149.1-M91 (Natural Gas) or
CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (for
General Installation and Gas Plumbing).
The dryer must be installed on a sound level floor capable of
supporting its weight. Carpeting must be removed from the
floor area that the dryer is to rest on.
Important
!
“The dryer must be installed on noncombustible
floors only.”
Unpacking/Setting Up _______________
Remove protective shipping material (i.e., plastic wrap and
optional shipping box) from the dryer.
Important
!
Dryer must be transported and handled in an
upright position at all times.
With the skid removed, to make it easier to slide the dryer into
its final position, slightly lower all 4 leveling legs, so that the
dryer will slide on the legs instead of the base frame.
Leveling Dryer
The dryer is equipped with 4 leveling legs, 1 at each corner of
the base. 2 are located at the rear of the dryer base, and 2
are located in the lint chamber. To increase bearing life and
improve efficiency, the dryer should be tilted slightly to the
rear.
The dryer must not be installed or stored in an area where it
will be exposed to water and/or weather.
The dryer is for use in noncombustible locations.
Provisions for adequate air supply must be provided as noted
in this manual (refer to Fresh Air Supply Requirements
section).
Clearance provisions must be made from combustible
construction as noted in this manual (refer to Dryer Enclosure
Requirements section).
Provisions must be made for adequate clearances for
servicing and for operation as noted in this manual (refer to
Dryer Enclosure Requirements section).
The dryer must be installed with a proper exhaust duct
connection to the outside as noted in this manual (refer to
Exhaust Requirements section).
The dryer must be located in an area where correct exhaust
venting can be achieved as noted in this manual (refer to
Exhaust Requirements section).
Important
!
The dryer should be located where a minimum
amount of exhaust ducting will be necessary.
The dryer must be installed with adequate clearance for air
openings into the combustion chamber.
Caution
!
This dryer produces combustible lint and must be
exhausted to the outdoors. Every 6 months,
inspect the exhaust ducting and remove any lint buildup.
113245-4
www.amdry.com
7
Dryer Enclosure Requirements ______
Fresh Air Supply Requirements ______
Bulkheads and partitions should be made of noncombustible
material.
When the dryer is operating, it draws in room air, heats it,
passes this air through the tumbler, and exhausts it out of the
building. Therefore, the room air must be continually
replenished from the outdoors. If the make-up air is
inadequate, drying time and drying efficiency will be adversely
affected. Ignition problems and sail switch “fluttering”
problems may result, as well as premature motor failure from
overheating. The dryer must be installed with provisions for
adequate combustion and make-up air supply.
Note
!
Allowances must be made for opening the control
door.
Air supply (make-up air) must be given careful consideration
to ensure proper performance of each dryer. As a general
rule, an unrestricted air entrance from the outdoors
(atmosphere) of a minimum of 1 square foot (3.59 square
meters) is required for each dryer.
A
30-inches (76.2 cm) for optimum opening of load door.
B
The maximum thickness of the bulkhead is 4-inches
(10.16 cm). For electric dryers the maximum thickness
of the bulkhead is 1-inch (2.54 cm) within 3-inches (7.62
cm) from the top of the control door.
C
For gas and electric dryers a minimum overhead
clearance of 12-inches (30.48 cm) is required, providing
no sprinkler is located above the dryer. For steam dryers
or if a sprinkler is located above the dryer, 18-inches
(45.72 cm) is required.
D
Dryer should be positioned 12-inches (30.48 cm) away
from the nearest obstruction and 24-inches (60.96 cm)
is recommended for ease of installation, maintenance,
and service.
E
2-inch (5.08 cm) minimum is required for opening the
control door.
F
Flooring should be level or below dryer cabinet for ease
of removing panels during maintenance.
G
Dryers may be positioned sidewall to sidewall, however
a 1/16” (1.5875 mm) minimum allowance must be made
for the opening and closing of the control door, along
with the removal of panels during maintenance.
A = 16-inches (40.62 cm)
B = 18-inches (45.72 cm)
To compensate for the use of registers or louvers used over
the openings, this area must be increased by approximately
thirty-three percent (33%). Make-up air openings should not
be located in an area directly near where exhaust vents exit
the building.
It is not necessary to have a separate make-up air opening
for each dryer. Common make-up air openings are
acceptable. However, they must be set up in such a manner
that the make-up air is distributed equally to all the dryers.
EXAMPLE: For a bank of 4 dryers, 2 unrestricted openings
measuring 18-inches by 16-inches (45.72 cm by 40.62 cm)
are acceptable.
Allowances must be made for remote or constricting
passageways or where dryers are located at excessive
altitudes or predominantly low pressure areas.
Important
!
Make-up air must be provided from a source free
of dry cleaning solvent fumes. Make-up air that is
contaminated by dry cleaning solvent fumes will result in
irreparable damage to the motors and other dryer
components.
Note
!
8
American Dryer Corp.
Component failure due to dry cleaning solvent
fumes will void the warranty.
113245-4
Exhaust Requirements ______________
Exhaust ductwork should be designed and installed by a
qualified professional. Improperly sized ductwork will create
excessive back pressure, which results in slow drying,
increased use of energy, and shutdown of the burner by the
airflow (sail) switch, burner hi-limits, or lint chamber hi-limit
protector thermostat. The dryer must be installed with a proper
exhaust duct connection to the outside.
Caution
!
This dryer produces combustible lint and must be
exhausted to the outdoors.
Improperly sized or installed exhaust ductwork can create
a potential fire hazard.
The ductwork should be laid out in such a way that the
ductwork travels as directly as possible to the outdoors with
as few turns as possible. Single or independent dryer venting
is recommended. It is suggested that the use of 90° turns be
avoided; use 30° and/or 45° bends instead. The radius of
the elbows should preferably be 1-1/2 times the diameter of
the duct. All ductwork should be smooth inside with no
projections from sheet metal screws or other obstructions,
which will collect lint. When adding ducts, the duct to be
added should overlap the duct to which it is to be connected.
All ductwork joints must be taped to prevent moisture and lint
from escaping into the building. Inspection doors should be
installed at strategic points in the exhaust ductwork for
periodic inspection and cleaning of lint from the ductwork.
Important
!
It is recommended that exhaust or booster fans
not be used in the exhaust ductwork system.
Exhaust back pressure measured by a manometer in the
exhaust duct must be no less than 0 and must not exceed
0.3 inches (0.74 mb) of W.C.
Note
!
When the exhaust ductwork passes through a wall,
ceiling, or roof made of combustible materials, the
opening must be 2-inches (5.08 cm) larger than the duct
(all the way around). The duct must be centered within this
opening.
As per the National Fuel Gas Code, “Exhaust ducts for type
2 clothes dryers shall be constructed of sheet metal or
other noncombustible material. Such ducts shall be
equivalent in strength and corrosion resistance to ducts
made of galvanized sheet steel not less than 26 gauge
(0.0195-inches [0.05 mm]) thick.”
Outside Ductwork Protection
Important
!
Do not use screens, louvers, or caps on the
outside opening of the exhaust ductwork.
NOTE 1 Opening must be 2-inches (5.08 cm) larger than the duct (all the way
around). The duct must be centered within this opening.
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest
obstruction.
Single Dryer Venting
Important
!
For extended ductwork runs, the cross section
area of the ductwork can only be increased to an
extent. When the ductwork approaches the maximum
limits as noted in this manual, a professional HVAC firm
should be consulted for proper venting information.
To protect the outside end of the horizontal ductwork from the
weather, a 90° elbow bent downward should be installed
where the exhaust exits the building. If the ductwork travels
vertically up through the roof, it should be protected from the
weather by using a 180° turn to point the opening downward.
In either case, allow at least twice the diameter of the duct
between the duct opening and the nearest obstruction (refer
to the diagram).
113245-4
www.amdry.com
9
Horizontal Venting
When horizontal dryer venting is used, the length
of the ductwork from the dryer to the outside
exhaust outlet, must not exceed 30 feet (9.14
meters). The minimum diameter of this ductwork
must be at least 8-inches (20.32 cm). Including
tumbler/dryer elbow connections or elbows used
for outside protection from the weather, no more
than 1 elbow should be used in the exhaust duct
run. If more than 1 elbow is used, the crosssectional area of the ductwork must be increased.
Vertical Venting
When vertical dryer venting is used, the length of
the ductwork from the dryer to the outside exhaust
outlet, must not exceed 60 feet (18.29 meters).
The minimum diameter of this ductwork must be
at least 10-inches (25.4 cm). Including tumbler/
dryer elbow connections or elbows used for
outside protection from the weather, no more
than 3 elbows should be used in the exhaust
duct run. If more than 3 elbows is used, the crosssectional area of the ductwork must be increased.
Multiple Dryer (Common) Venting
Important
!
For extended ductwork runs, the cross section area of the
ductwork can only be increased to an extent. When the
ductwork approaches the maximum limits as noted in this manual, a
professional HVAC firm should be consulted for proper venting
information.
If it is not feasible to provide separate exhaust ducts for each dryer, ducts
from individual dryers may be channeled into a “common main duct.”
The individual ducts should enter the bottom or side of the main duct at
an angle not more than 45º in the direction of airflow. The main duct
should be tapered, with the diameter increasing before each individual
duct is added. The minimum diameter of the individual ductwork must be
at least 8-inches (20.32 cm).
Important
!
No more than 4 dryers should be connected to 1 main
common duct.
The illustration below shows the minimum cross-sectional area for
multiple dryer round or square venting. These figures must be increased
if the main duct run from the last dryer to where it exhausts to the outdoors
is unusually long or has numerous (more than 1) elbows in it.
Dimension B must not exceed 20 feet (6.1 meters).
Multiple Dryer Venting with 8-Inch (20.32 cm) Diameter
600 cfm (17 cmm) Exhaust Connections at Common Duct
NUMBER OF DRYERS
Minimum CrossSectional Area
Minimum Round
Duct Diameter
sq in
sq cm
in
cm
4
3
2
1
210
1355
18
45
165
1058
16
40
120
774
14
35
80
516
10
24
A = 8-inches (20.32 cm)
B = 20 feet (6.1 meters)
A = 30 feet (9.14 meters)
B = 8-inches (20.32 cm)
C = 60 feet (18.29 meters)
D = 10-inches (25.4 cm)
NOTE 1 Opening must be 2-inches (5.08 cm) larger than the
duct (all the way around). The duct must be centered
within this opening.
NOTE 2 Distance should be 2 times the diameter of the duct
to the nearest obstruction.
10
NOTE 1 Opening must be 2-inches (5.08 cm) larger than the duct (all the way around). The
duct must be centered within this opening.
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest obstruction.
American Dryer Corp.
113245-4
Electrical Information _______________
Electrical Requirements
All electrical connections must be made by a properly licensed
and competent electrician. This is to ensure that the electrical
installation is adequate and conforms to local and state
regulations or codes. In the absence of such codes, all
electrical connections, materials, and workmanship must
conform to the applicable requirements of the National
Electrical Code ANSI/NFPA NO. 70-LATEST EDITION or in
Canada, the Canadian Electrical Codes Parts 1 & 2 CSA
C22.1-1990 or LATEST EDITION.
!
Figures shown are for non-reversing models only.
For reversing models contact the factory.
Gas and Steam
ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER)
IMPORTANT:
208 VAC AND 230/240 VAC ARE NOT THE SAME. When ordering,
specify exact voltage.
NOTES:
When fuses are used they must be dual element, time delay, current
limiting, class RK1 or RK5 ONLY. Calculate/determine correct fuse value,
by applying either local and/or National Electrical Codes to listed
appliance amp draw data.
Circuit breakers are thermal-magnetic (industrial) motor curve type ONLY.
For others, calculate/verify correct breaker size according to appliance
amp draw rating and type of breaker used.
Circuit breakers for 3-phase (3ø) dryers must be 3-pole type.
Component failure due to improper installation will
void the warranty.
Each dryer should be connected to an independently protected
branch circuit. The dryer must be connected with copper
wire only. Do not use aluminum wire, which could cause a
fire hazard. The copper conductor wire/cable must be of proper
ampacity and insulation in accordance with electric codes
for making all service connections.
C.
SERVICE
VOLTAGE
PHASE
100
115
208
230
240
208
230
240
380-400
416
460-480
1ø
1ø
1ø
1ø
1ø
3ø
3ø
3ø
3ø
3ø
3ø
WIRE
SERVICE
2
2
2
2
2
3
3
3
4*
4*
3
APPROX.
AMP DRAW
60 Hz
50 Hz
8.0
8.7
5.2
4.8
—
3.0
3.2
—
—
—
2.1
9.4
—
—
—
5.6
—
—
3.6
2.2
2.3
—
* Dryers are built 4-wire, 3-wire is available.
Note
CIRCUIT
BREAKER
15
15
15
15
15
15
15
15
15
15
15
4/12/05
The use of aluminum wire will void the warranty.
Electric
An individual ground circuit must be provided to each
dryer, do not daisy chain.
Component failure due to improper voltage application will
void the warranty.
The manufacturer reserves the right to make changes in
specifications at any time without notice or obligation.
ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER)
IMPORTANT:
208 VAC AND 230/240 VAC ARE NOT THE SAME. When ordering,
specify exact voltage.
NOTES:
When fuses are used they must be dual element, time delay, current
limiting, class RK1 or RK5 ONLY. Calculate/determine correct fuse value,
by applying either local and/or National Electrical Codes to listed
appliance amp draw data.
Circuit breakers are thermal-magnetic (industrial) type ONLY. For others,
calculate/verify correct breaker size according to appliance amp draw
rating and type of breaker used.
Circuit breakers for 3-phase (3ø) dryers must be 3-pole type.
Important
!
A.
B.
Note
!
!
Important
Failure to comply with these codes or ordinances,
and/or the requirements stipulated in this manual
can result in personal injury or component failure.
!
Electrical Service Specifications
Important
B.
A separate protected circuit must be provided to
each dryer.
The dryer must be connected to the electric supply shown
on the data label. In the case of 208 VAC or 240 VAC, the
supply voltage must match the electric service
specifications of the data label exactly.
The wire size must be properly sized to handle the related
current.
Warning
!
A.
208 VAC and 240 VAC are not the same. Any
damage done to dryer components due to
improper voltage connections will automatically void the
warranty.
C.
SERVICE
VOLTAGE
PHASE
WIRE
SERVICE
CIRCUIT
BREAKER
60 Hz
50 Hz
77
70
—
—
—
—
68
29
100
90
90
40
101
92
—
62
—
—
—
—
89
—
34
32
150
125
125
80
45
45
—
39
80
72
66
65
—
—
—
32
—
—
—
63
42
39
—
90
90
90
80
60
50
40
15 kW
208
230
240
380
1ø
1ø
1ø
3ø
208
230
240
208
380
416
1ø
1ø
1ø
3ø
3ø
3ø
400
3ø
208
220
230
240
380
416
460
3ø
3ø
3ø
3ø
3ø
3ø
3ø
2
2
2
4*
20 kW
2
2
2
3
4*
4*
22 kW
4*
24 kW
3
3
3
3
4*
4*
3
* Dryers are built 4-wire, 3-wire is available.
113245-4
APPROX.
AMP DRAW
www.amdry.com
4/12/05
11
Grounding
A ground (earth) connection must be provided and installed
in accordance with state and local codes. In the absence of
these codes, grounding must conform to applicable
requirements of the National Electrical Code ANSI/NFPA NO.
70-LATEST EDITION, or in Canada, the installation must
conform to applicable Canada Standards: Canadian Electrical
Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION.
The ground connection may be to a proven earth ground at
the location service panel.
For added personal safety, when possible, it is suggested
that a separate ground wire (size per local codes) be
connected from the ground connection of the dryer to a
grounded cold water pipe. Do not ground to a gas pipe or hot
water pipe. The grounded cold water pipe must have metalto-metal connection all the way to the electrical ground. If
there are any nonmetallic interruptions, such as, a meter,
pump, plastic, rubber, or other insulating connectors, they
must be jumped out with a wire (size per local codes) and
securely clamped to bare metal at both ends.
!
Important
For personal safety and proper operation, the
dryer must be grounded.
Provisions are made for ground connection in each dryer at
the electrical service connection area.
Single-Phase Electrical Lead Connections
Black
+
Positive
White or Red
+
Neutral
or L2
Green
+
Ground
Electrical Connections
A wiring diagram is located inside the control box for
connection data.
If local codes permit, power to the dryer can be made by the
use of a flexible U.L. listed power cord/pigtail (wire size must
conform to rating of dryer), or the dryer can be hard wired
directly to the service breaker panel. In both cases, a strain
relief must be installed where the wiring enters the dryer.
For 110V Applications
Gas and Steam Models Only
Important
!
A separate protected circuit must be provided to
each dryer.
Single-Phase (1ø)
Wiring Connections/Hookup
The electrical input connections on all single-phase (1ø) gas
and steam dryers are made into the rear service box located
at the upper left area of the dryer. The ground connection is
made to the copper lug, also provided in this box. To gain
access, the service box cover must be removed.
12
American Dryer Corp.
113245-4
For 208-240V Applications
Electrically Heated Models Only
The electrical input connections are made at the contactor
located inside the electric oven assembly at the rear center
upper section of the dryer. The ground connection is made to
a copper lug also provided in this area. To gain access,
remove oven rear service cover.
The only electrical input connections to the dryer are the
3-phase (3ø) power leads (L1, L2, L3, and sometimes neutral)
and ground. Single-phase (1ø) power for the control circuit
and for any single-phase (1ø) motors (if present) is done
internally to the dryer by the factory at the oven contactor. No
single-phase (1ø) input connection is required on a 3-phase
(3ø) dryer.
Caution
!
A ground lug is provided in the rear electrical box to connect
your service ground.
3-Phase (3ø) Wiring Connections/Hookup
The electrical connections on all 3-phase (3ø) gas and steam
dryers are made into the rear service box located at the upper
left area of the dryer. The ground connection is made to the
copper lug, also provided in this box. To gain access, the
service box cover must be removed.
The dryer must be grounded. A ground lug has
been provided for this purpose.
Input connection wiring must be sized properly to handle the
dryer’s current draw. This information is printed on the dryer’s
data label.
Important
!
A strain relief must be used where the input wiring
enters the oven assembly.
The neutral will only be used on 4-wire service. This is typical
for 380-416V, 50 Hz.
113245-4
www.amdry.com
13
Gas Information _____________________
It is your responsibility to have all plumbing connections made
by a qualified professional to ensure that the gas plumbing
installation is adequate and conforms to local and state
regulations or codes. In the absence of such codes, all
plumbing connections, materials, and workmanship must
conform to the applicable requirements of the National Fuel
Gas Code ANSI Z223.1-LATEST EDITION, or in Canada, the
Canadian Installation Codes CAN/CGA-B149.1-M91 (Natural
Gas) or CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION.
Important
!
Failure to comply with these codes or ordinances,
and/or the requirements stipulated in this manual,
can result in personal injury and improper operation of the
dryer.
The dryer and its individual shutoff valve must be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess
of 1/2 psig (3.5 kPa).
Failure to isolate or disconnect the dryer from supply as
noted can cause irreparable damage to the gas valve,
voiding the warranty.
!
Note
Warning
Fire or explosion could result due to failure of
isolating or disconnecting the gas supply as noted.
Gas Supply
The gas dryer installation must meet the American National
Standard...National Fuel Gas Code ANSI Z223.1-LATEST
EDITION, or in Canada, the Canadian Installation Codes
CAN/CGA-B149.1 M91 (Natural Gas) or CAN/CGA-B149.2M91 (L.P. Gas) or LATEST EDITION, as well as local codes
and ordinances and must be done by a qualified
professional.
Note
!
Undersized gas piping will result in ignition
problems, slow drying, increased use of energy,
and can create a safety hazard.
The dryer must be connected to the type of heat/gas indicated
on the data label. If this information does not agree with the
type of gas available, do not operate the dryer. Contact the
reseller who sold the dryer or contact the manufacturer.
!
Important
!
This gas dryer is not provided with an internal gas
supply shutoff and an external gas supply shutoff
must be provided.
Technical Gas Data
Gas Specifications
Type of Gas
Manifold Pressure*
In-Line Pressure
3.5 inches W.C.
6.0-12.0 inches W.C.
8.7 mb
14.92 - 29.9 mb
10.5 inches W.C.
11.0 inches W.C.
26.1 mb
27.4 mb
Natural
Liquid
Propane
Shaded areas are stated in metric equivalents
The dryer must be isolated from the gas supply
piping system by closing its individual manual
shutoff valve during any pressure test of the gas supply
system at test pressures equal to or less than 1/2 psig (3.5
kPa).
!
The input ratings shown on the data label are for elevations
up to 2,000 feet (610 meters), unless elevation requirements
of over 2,000 feet (610 meters) were specified at the time the
dryer order was placed with the factory. The adjustment or
conversion of dryers in the field for elevations over 2,000 feet
(610 meters) is made by changing each burner orifice. If this
conversion is necessary, contact the reseller who sold the
dryer or contact the manufacturer.
* Measured at outlet side of gas valve pressure tap when gas valve is on.
Gas Connections
Inlet connection ............ 1/2” N.P.T.
Inlet supply size ........... 1/2” Diameter Pipe (minimum)
Heat input (per dryer) .. 78,000 Btu/hr (19,650 kcal/hr)
Natural Gas
Regulation is controlled by the dryer’s gas valve’s internal
regulator. Incoming supply pressure must be consistent
between a minimum of 6.0 inches (14.92 mb) and a maximum
of 12.0 inches (29.9 mb) W.C. pressure.
L.P. Gas
Dryers made for use with L.P. gas have the gas valve’s internal
pressure regulator blocked open so that the gas pressure
must be regulated upstream of the dryer. The pressure
measured at each gas valve pressure tap must be a
consistent 10.5 inches (26.1 mb) W.C. There is no regulator
or regulation provided in an L.P. dryer. The pressure must be
regulated at the source (L.P. tank) or an external regulator
must be added to each dryer.
TYPE OF GAS
Natural
Liquid Propane
Btu/hr
Rating
kcal/hr
Rating
Qty.
D.M.S.*
Part No.
Qty.
D.M.S.*
Part No.
78,000
19,650
2
#31
140818
2
#50
140802
Liquid Propane Conversion Kit Part Number 874052
Important
Any burner changes or conversions must be made
by a qualified professional.
Shaded area is stated in metric equivalent
* D.M.S. equivalents are as follows:
Natural Gas ................ #31 = 0.1200” (3.048 mm).
L.P. Gas ...................... #50 = 0.0700” (1.778 mm).
14
American Dryer Corp.
113245-4
Note
Piping/Connections
All components/materials must conform to National Fuel Gas
Code Specifications ANSI Z223.1-LATEST EDITION, or in
Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGAB149.2-M91 (L.P. Gas) or LATEST EDITION (for General
Installation and Gas Plumbing), as well as local codes and
ordinances and must be done by a qualified professional. It
is important that gas pressure regulators meet applicable
pressure requirements, and that gas meters be rated for the
total amount of all the appliance Btu being supplied.
The dryer is provided with a 1/2” N.P.T. inlet pipe connection
located at the upper left rear of the dryer. The minimum pipe
size (supply line) to the dryer is 1/2” diameter. For ease in
servicing, the gas supply line of each dryer must have its own
shutoff valve.
The size of the main gas supply line (header) will vary
depending on the distance this line travels from the gas meter
or, in the case of L.P. gas, the supply tank, other gas-operated
appliances on the same line, etc. Specific information
regarding supply line size should be determined by the gas
supplier.
!
Note
!
A W.C. test pressure of 3.5 inches (8.7 mb) for
natural gas and 10.5 inches (26.1 mb) for L.P.
dryers is required at the gas valve pressure tap of each
dryer for proper and safe operation.
A 1/8” N.P.T. plugged tap, accessible for a test gauge
connection, must be installed in the main gas supply line
immediately upstream of each dryer.
Important
!
Pipe joint compounds that resist the action of
natural gas and L.P. gas must be used.
Test all connections for leaks by brushing on a soapy water
solution (liquid detergent works well).
!
Warning
Never test for leaks with a flame!!!
NOTES ______________________________________
_____________________________________________
Undersized gas supply piping can create a low or
inconsistent pressure, which will result in erratic
operation of the burner ignition system.
_____________________________________________
_____________________________________________
_____________________________________________
TYPICAL NATURAL GAS INSTALLATION
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
TYPICAL L.P. GAS INSTALLATION
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
Consistent gas pressure is essential at all gas connections.
It is recommended that a 3/4-inch (19.05 mm) pipe gas loop
be installed in the supply line servicing a bank of dryers. An
in-line pressure regulator must be installed in the gas supply
line (header) if the (natural) gas pressure exceeds 12.0
inches (29.9 mb) of W.C. pressure.
113245-4
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
www.amdry.com
15
Steam Information __________________
Installation Instructions
It is your responsibility to have all plumbing connections made
by a qualified professional to ensure that the steam plumbing
installation is adequate and conforms with local and state
regulations or codes.
To ensure an adequate supply of steam is provided, be sure
that the steam supply lines and steam return lines are sized
and laid out as stipulated in this manual. Inadequate steam
supply lines and steam return lines or improper steam
plumbing will result in poor performance and can cause
component failure. Clean, dry steam must be provided to the
dryer.
Care must be exercised when leveling steam dryers into final
position. After leveling the dryer, check the downward pitch of
the heat exchanger from front to rear with a level. Likewise,
check the downward pitch of the return condensate manifold
toward its outlet part. Absence of these downward pitches
will result in probable water hammer and premature heat
exchanger fracture and leakage.
The presence of condensate in the steam will cause water
hammer and subsequent heat exchanger failure. The steam
supply connection must be taken from the top of a
well-dripped steam main. If the supply run-out to the dryer
exceeds 20 feet (6.1 meters), it should be dripped just before
the control valve with a proper trap and dirt pocket.
Important
!
Failure to comply with the requirements stipulated
in this manual can result in component failure,
which will void the warranty.
Note
!
The dryer is manufactured with a pneumatic
(piston) damper system, which requires an
external air supply of 0.75 cfh @ 80 psi +/- 10 psi (0.02 cmh
@ 5.51 bar +/- 0.69 bar).
Steam Coil pH Level
The normal pH level for copper type steam coils must be
maintained between a value of 8.5 to 9.5. For steel type
steam coils the pH level must be maintained between a value
of 9.5 to 10.5. These limits are set to limit the acid attack of
the steam coils.
Important
!
Coil failure due to improper pH level will void the
warranty.
Steam Requirements – High Pressure
Inlet ----------- 1” N.P.T. supply line connection
at top manifold
Return ------- 1” N.P.T. return line connection
at bottom manifold
125 psig*
Heat Input (Normal Load)
Consumption (Approximate)
@ 125 psi (8.6 bar)
!
Steam coil failure due to water hammer by wet
steam will void the warranty.
The presence of the condensate in the steam supply line will
cause water hammer and subsequent heat exchanger
(steam coil) failure. The steam supply connection into the
main supply line must be made with a minimum 10-inch
(25.4 cm) riser. This will prevent any condensate from draining
towards the dryer.
The steam supply line to the dryer must include a 12-inch
(30.48 cm) riser along with a drip trap and check valve. This
will prevent any condensate from entering the steam coil.
Flexible hoses or couplings must be used. The dryer vibrates
slightly when it runs and this will cause the steam coil
connections to crack if they are hard piped to the supply and
return mains.
Shutoff valves for each dryer should be installed in the supply
line, return line, and drip trap return line. This will allow the
dryer to be isolated from the supply main and the return main
if the dryer needs maintenance work.
Install an inverted bucket steam trap and check valve at least
12-inches (30.48 cm) below the steam coil as close to the
coil as possible. A trap with a minimum capacity of 200 lb
(90.72 kg) of condensate per hour at 125 psi (8.62 bar) is
needed for each unit.
The supply line and the return line should be insulated. This
will save energy and provide for the safety of the operator and
maintenance personnel.
Water pockets in the supply line, caused by low points, will
provide wet steam to the coil possibly causing steam coil
damage. All horizontal runs of steam supply piping should
be pitched 1/4-inch (6.35 mm) for every 1 foot (0.31 meters)
back towards the steam supply header causing the
condensate in the line to drain to the header. Install a bypass
trap in any low point to eliminate wet steam.
Important
!
Operating Steam Pressure
Maximum
Important
861.84 kPa
Flexible hoses/couplings must be used. Coil
failure due to hard plumbing connections will void
the warranty.
2.9 Bhp
98.8 lb/hr
44.8 kg/hr
Shaded areas are stated in metric equivalents
* The minimum operating pressure for optimum results is 100 psig (689.47
kPa).
16
American Dryer Corp.
113245-4
Steam Damper Air System Connections
Air Regulation
The dryer is manufactured with a pneumatic (piston) damper
system, which requires an external supply of compressed
air. The air connection is made to the steam damper solenoid
valve, which is located at the rear inner top area of the dryer
just in front of the electric service relay box.
No air regulator or filtration is provided with the dryer. External
regulation/filtration of 80 psi (5.51 bar) must be provided. It is
suggested that a filter/regulator/gauge arrangement be
added to the compressed air line just before the dryer
connection. This is necessary to ensure that correct and
clean air pressure is achieved.
Steam Damper Air Piston (Flow Control)
Operation Adjustment
Steam Damper System Operation
Although the steam damper operation was tested and
adjusted prior to shipping at 80 psi (5.51 bar), steam damper
operation must be checked before the dryer is put into
operation. Refer to Preoperational Tests section to check
steam damper system operation. If steam damper
adjustment is necessary, locate the flow control valve and
make the necessary adjustments as noted below.
The steam damper shown in Diagram 1 in the illustration
below, allows the coil to stay constantly charged eliminating
repeated expansion and contraction. When the damper is
opened, the air immediately passes through the already hot
coil, providing instant heat to start the drying process. When
the damper is closed, ambient air is drawn directly into the
tumbler, allowing a rapid cool down (Diagram 2).
Diagram 1 shows the damper in the heating (open) mode,
allowing heat into the tumbler.
Diagram 2 shows the damper in the cool down (closed)
mode, pulling ambient air directly into the tumbler without
passing through the coils.
Note
!
With the dryer off or with no air supply, the steam
damper is in cool down mode as shown in
Diagram 2.
Air Requirements
Compressed
Air Supply
Normal
Minimum Supply
Maximum Supply
Air Pressure
80 psi
70 psi
90 psi
5.51 bar
4.82 bar
6.21 bar
Shaded areas are stated in metric equivalents
Air Connection
Air connection to system – 1/8” N.P.T.
113245-4
www.amdry.com
17
Water Information ___________________
Water Connections
Before You Start, Check Local Codes and
Permits
The water connection is made to the 3/4”-11.5 NH hose
adaptor of the electric water solenoid valve, located at the
rear upper midsection of the dryer. Flexible supply line/
coupling must be used in an effort to avoid damaging the
electric water solenoid valve. (Refer to the photograph.)
Call your local water company or the proper municipal
authority for information regarding local codes.
Important
!
It is your responsibility to have all plumbing
connections made by a qualified professional to
ensure that the plumbing installation is adequate and
conforms to local, state, and federal regulations or codes.
It is the installer’s or owner’s responsibility to see that the
required water pressure, pipe size, or connections are
provided. The manufacturer assumes no responsibility if
the fire suppression system is not connected, installed, or
maintained properly.
Water Solenoid Valve
Installation
Water Supply
The fire suppression system must be supplied with a
minimum water pipe size of 1/2-inch (12.7 mm) and be
provided with 40 psi +/- 20 psi (2.75 bar +/- 1.37 bar) of
pressure. For use of optional manual bypass, a second
source with the same piping and pressure requirements is
required.
If the rear area of the dryer or the water supply is located in an
area where it will be exposed to cold/freezing temperatures,
provisions must be made to protect these water lines from
freezing.
!
Note
!
The 3/4”-11.5 NH is a standard hose coupling
screw thread. It is not to be confused with 3/4”
N.P.T. The sealing of an NH connection is made with a
washer opposed to the mating threads of an N.P.T.
assembly. The 2 thread designs are not compatible.
It is recommended that a filter or strainer be installed in the
water supply line.
Warning
If the water in the supply line or water solenoid
valve freezes, the fire suppression system will be
inoperative!!
Important
!
Flexible supply line/coupling must be used.
Solenoid valve failure due to hard plumbing
connections will void warranty.
The dryer is to be connected to the water mains using a
new hose set and the old hose set should not be reused.
18
American Dryer Corp.
113245-4
Optional Manual Bypass
Provisions are made in the dryer’s fire suppression system
for the installation of an optional manual bypass. Depending
on the model dryer, the connections for the manual bypass
are made at the “T” or “three way” fitting located in the outlet
supply side of the water solenoid valve. The manual ball
cock shutoff valve must be located outside of the dryer at a
distance from the dryer where it is easily accessible. The
use and connections of this manual bypass are at the option
or discretion of the owner.
The water connection for the manual bypass is made to the
“T” or “three way” fitting, which has a 3/8” F.P.T. and a coupling
must be used to provide the minimum 1/2-inch (12.7 mm)
supply (feed) line.
113245-4
If the rear area of the dryer or the water supply is located in an
area where it will be exposed to cold/freezing temperatures,
provisions must be made to protect these water lines from
freezing.
Electrical Requirements
No independent external power source or supply connection
is necessary. The 24-volt power to operate the fire
suppression system is accomplished internally in the dryer
(from the dryer controls).
Warning
!
Electrical power must be provided to the dryer at
all times. If the main electrical power supply to the
dryer is disconnected, the fire suppression system is
inoperative!!
www.amdry.com
19
Preparation for Operation/Start-Up __
The following items should be checked before attempting to
operate the dryer:
• Read all “CAUTION,” “WARNING,” and “DIRECTION”
labels attached to the dryer.
• Check incoming supply voltage to be sure that it is the
same as indicated on the data label. In the case of
208 VAC or 240 VAC, the supply voltage must match
the electric service exactly.
• GAS MODELS – Check to ensure that the dryer is
connected to the type of heat/gas indicated on the dryer
data label.
• GAS MODELS – Be sure that all gas shutoff valves are
in the open position.
• GAS AND ELECTRIC MODELS – The sail switch
damper assembly was installed and adjusted at the
factory prior to shipping. However, each sail switch
adjustment must be checked to ensure that this
important safety control is functioning. (Refer to Sail
Switch Adjustment in the Preoperational Tests
section).
• Be sure all back panels (guards) and electric box
covers are in place.
• Be sure the service doors are closed and securely in
place.
• Be sure the lint door/drawer is securely in place.
• Rotate the tumbler (drum) by hand to be sure it moves
freely.
• Check bolts, nuts, screws, terminals, and fittings for
tightness and security.
• Steam Models – check to ensure that a clean, dry,
regulated air supply (80 psi [5.51 bar]) is on the dryer
(with air-operated damper system only).
Note
!
During the purging period, check to be sure that all
gas shutoff valves are open.
Gas dryers are equipped with a DSI system, which has
internal diagnostics. If ignition is not established within 3
attempts, the heat circuit in the DSI module will “lockout”
until it is manually reset. To reset the DSI system, open
and close the main door and restart the dryer.
A gas pressure test should be taken at the gas valve pressure
tap of each dryer to ensure that the W.C. pressure is correct
and consistent.
!
Note
W.C. pressure requirements (measured at the
pressure tap of the gas valve body):
Natural Gas ________________ 3.5 Inches (8.7 mb) W.C.
L.P. Gas _________________ 10.5 Inches (26.1 mb) W.C.
Important
!
There is no regulator provided in an L.P. dryer.
The W.C. pressure must be regulated at the
source (L.P. tank), or an external regulator must be added
to each dryer.
Steam Dryers
Check to ensure that steam damper is functioning properly.
The steam damper should not “slam” (open or closed) when
it reaches the end of (piston) travel. Additionally, the steam
damper should not bind and/or stop during travel. If either of
these conditions occur, the flow control must be adjusted.
Refer to the Steam Damper Air Piston (Flow Control)
Operation Adjustment instructions in the Steam Information
section.
Electrical Dryers
• STEAM MODELS – Check to ensure all steam shutoff
valves are open.
Check to ensure that electric oven/contactor assembly is
activating.
• STEAM MODELS – Check steam damper operation.
Safety Related Circuits
• Check tumbler bearing setscrews to ensure they are
all tight.
• Check that the vent is connected to the dryer and is
exhausted to the outdoors.
Preoperational Tests ________________
All dryers are thoroughly tested and inspected before leaving
the factory. However, a preoperational test should be
performed before the dryer is publicly used. It is possible
that adjustments have changed in transit or due to marginal
location (installation) conditions.
Turn on electric power to the dryer.
Refer to the Operating Instructions for starting your particular
model dryer.
Gas Dryers
Open all shutoff valves.
When a gas dryer is first started (during initial start-up), it has
a tendency not to ignite on the first ignition attempt. This is
because the gas supply piping is filled with air, so it may take
a few minutes for the air to be purged from the lines.
20
Make a complete operational check of all safety related
circuits:
• Door Switch(es)
• Hi-Limit Thermostats
• Sail Switch (for Gas and Electric Models Only)
Sail Switch Adjustment – To check for proper sail switch
operation (for gas and electric models only), open the main
door and while holding main door switch plunger in, start
dryer. Dryer should start but heat circuit should not be activated
(on). If the heat system is activated, the sail switch is
improperly adjusted and must be adjusted by bending the
actuator arm of the sail switch toward the burner box. If the
actuator arm is bent too far toward the burner box of the dryer,
the dryer may not have heat when needed. After any
adjustment to the sail switch, the above procedure must be
repeated to verify proper operation of the sail switch.
The dryer should be operated through 1 complete cycle to
ensure that no further adjustments are necessary and that
all components are functioning properly.
Make a complete operational check of all operating controls.
American Dryer Corp.
113245-4
For microprocessor model check controller (computer)
programs/selections: each microprocessor controller
(computer) has been preprogrammed by the factory with the
most commonly used parameter (program) selections. If
computer program changes are required, refer to the
computer programming manual which was shipped with the
dryer.
Tumbler Coating
The tumbler is treated with a protective coating. We suggest
dampening old garments or cloth material with a solution of
water and nonflammable mild detergent and tumbling them
in the tumbler to remove this coating.
3-Phase (3ø) Electric Service
Check the electric service phase sequence (3-phase [3ø]
models only). While the dryer is operating, check to see if the
blower/fan is rotating in the proper direction. Looking from
the front, the blower/fan should spin in the CW direction. If it
is, the phasing is correct. If the phasing is incorrect, reverse
2 of the 3 leads at connections L1, L2, L3 of the power supply
to the dryer.
!
Important
TIMING LEGEND
SPIN TIME
Adjustment Position Number
1
2
3
4
5
30
60
90
120
150
Adjustment Position Number
1
2
3
4
5
Time in Seconds*
5
6.3
7.6
8.9
10.2
Time in Seconds*
DWELL (STOP) TIME
* Values shown are +/- 1-second.
Preoperational Instructions _________
Important
!
For more detailed information regarding the
microprocessor controller (computer), refer to the
microprocessor user’s manual included with the dryer.
Coin Models
Microprocessor Controller (Computer)
If the blower/fan is rotating in the wrong direction, it
will drastically reduce drying efficiency and it can
also cause premature component failure.
When the microprocessor controller (computer) is in the ready
state, the L.C.D. screen will display “Ready, Insert $XX.XX
(amount) to Start”.
Spin and Dwell (Stop) Times Adjustment
Insert coin(s). Once the correct “Amount to Start” has been
inserted, the L.C.D. will display “Select Temperature”.
Reversing tumbler dryers should never be operated with less
than a 17 lb (7.71 kg) load (dry weight), since the load’s weight
affects tumbler coast time during a direction reversal
command. It is important that the tumbler come to a complete
stop prior to starting in opposite direction.
Microprocessor Models – Spin and dwell (stop) times
are adjustable in the Manual (timed) Mode. Spin and dwell
(stop) times are not adjustable in the Automatic Mode and
have been preprogrammed into the microprocessor controller
(computer) for 150-seconds spin time in forward direction,
120-seconds in the reverse direction and a 5-second dwell
(stop) time.
Mechanical Timer Models – Timer models have an
electronic reversing timer in the electrical service box, which
is located in the upper right front area of the dryer.
Both the dwell (stop) time and the tumbler spin time are
adjustable by mode selection switches located on the
electronic timer (as noted in the illustration below).
Select temperature by pressing “HI,” “MED,” or “LO.” The
cycle will start and the L.C.D. will display the Dry Cycle selected
and the remaining time.
The dryer will continue through the drying and cooling cycles,
until the vended time has expired.
!
Note
To stop the dryer, open main door or press the
pause key. Continuation of the cycle will resume
only after the door has been closed and any of the 3
temperature selection is pressed.
Mechanical Drop/Rotary Coin Meter
or Slide Coin Meter
Insert coin and turn knob (rotary type meter) or for slide meter
unit, push in coin chute.
Select temperature.
Push the “Start” button.
To stop the dryer, open the main door.
Non-Coin Models
Microprocessor Controller (Computer)
The L.E.D. display reads “READY” (no cycle in progress).
Press the letter on the keypad corresponding to the cycle
desired (i.e., key “D”).
The dryer will then start. (I.E., blower, tumbler, and heat.)
The L.E.D. display will read MANUAL DRYING CYCLE D, 00:00
MIN REMAIN.
113245-4
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21
Note
!
The dryer can be stopped at any time by pressing
the “STOP/CLEAR” key, at this time the dryer will
go into a cycle pause. If the “STOP/CLEAR” key is pressed
again at this point, the cycle that was in progress will be
cancelled and returned to the “READY” state.
NOTES ______________________________________
_____________________________________________
_____________________________________________
_____________________________________________
When the programmed drying time has expired, the Phase 7
non-coin microprocessor controller (computer) will proceed
into the Cool Down Cycle.
_____________________________________________
Once the Cool Down Cycle begins at the end of the heat
cycle, the L.E.D. display will read COOL DOWN TEMP ___/
___ MINUTES remaining. At the end of the heat cycle, the
dryer will shut off the heat and continue the fan and tumbler
until the Cool Down Time or temperature is reached.
_____________________________________________
Mechanical Timer
_____________________________________________
Turn drying timer knob for a time of 20 minutes.
_____________________________________________
Select “High Temp.”
_____________________________________________
Push “Push to Start” button.
_____________________________________________
To stop the dryer, open the main door.
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
Shutdown Instructions ______________
If the dryer is to be shutdown (taken out of service) for a
period of time, the following must be performed:
_____________________________________________
_____________________________________________
_____________________________________________
Discontinue power to the dryer either at the external disconnect
switch or the circuit breaker.
_____________________________________________
Discontinue the heat supply:
_____________________________________________
Gas Models – Discontinue the gas supply.
_____________________________________________
SHUT OFF external gas supply shutoff valve.
_____________________________________________
SHUT OFF internal gas supply shutoff valve located in the
gas valve burner area.
_____________________________________________
Steam Models – Discontinue the steam supply.
_____________________________________________
SHUT OFF external (location furnished) shutoff valve.
_____________________________________________
SHUT OFF internal steam valves in the supply lines and the
return lines.
_____________________________________________
_____________________________________________
_____________________________________________
22
American Dryer Corp.
113245-4
Service/Parts Information ___________
Returning Warranty Parts
Service
All dryer or parts warranty claims or inquiries should be
addressed to the Warranty Parts Department. To expedite
processing, the following procedures must be followed:
Service must be performed by a qualified trained technician,
service agency, or gas supplier. If service is required, contact
the reseller from whom the equipment was purchased. If the
reseller cannot be contacted or is unknown, contact the
Service Department for a reseller in your area.
Note
!
When contacting the Service Department, be sure
to give them the correct model number and serial
number so that your inquiry is handled in an expeditious
manner.
No parts are to be returned without prior written authorization
R.M.A. from the factory.
Note
!
An R.M.A. is valid for only 30 days from date of
issue.
The R.M.A. issued by the factory, as well as any other
correspondence pertaining to the returned part(s), must be
included inside the package with the failed merchandise.
Parts
Each part must be tagged with the following information:
Replacement parts should be purchased from the reseller
from whom the equipment was purchased. If the reseller
cannot be contacted or is unknown, contact the Parts
Department for a reseller in your area. Parts may also be
purchased directly from the factory by calling the Parts
Department at (508) 678-9000 or you may FAX in your order
at (508) 678-9447.
Model number and serial number of the dryer from which
part was removed.
Note
Nature of failure (be specific).
Date of dryer installation.
Date of part failure.
Specify whether the part(s) being returned is for a credit,
replacement, or a refund.
!
When ordering replacement parts from the reseller
or the manufacturer, be sure to give them the
correct model number and serial number so that your parts
order can be processed in an expeditious manner.
Warranty Information ________________
Returning Warranty Cards
Before any dryer leaves the factory test area, a warranty card
is placed on the back side of the main door glass. These
warranty cards are intended to serve the customer where we
record the individual installation date and warranty information
to better serve you should you file a warranty claim.
If a warranty card did not come with your dryer, contact the
Warranty Department or the Service Department at (508)
678-9000.
Important
!
A separate warranty card must be completed and
returned for each individual dryer.
Note
!
Note
!
If a part is marked for a credit or a refund, the
invoice number covering the purchase of the
replacement part must be provided.
Warranty tags (Part No. 450064) are available at “no
charge” from ADC upon request.
The company returning the part(s) must clearly note the
complete company name and address on the outside of the
package.
All returns must be properly packaged to ensure that they are
not damaged in transit. Damage claims are the responsibility
of the shipper.
Important
!
All returns should be shipped to the factory in such a manner
that they are insured and a proof of delivery can be obtained
by the sender.
Shipping charges are not the responsibility of ADC. All returns
should be “prepaid” to the factory. Any “C.O.D.” or “COLLECT”
returns will not be accepted.
Be sure to include the installation date when
returning the warranty card(s).
Warranty
Important
For a copy of the commercial warranty covering your particular
dryer(s), contact the reseller from whom you purchased the
equipment and request a dryer warranty form. If the reseller
cannot be contacted or is unknown, warranty information can
be obtained from the factory by contacting the Warranty
Department at (508) 678-9000.
Note
!
Whenever contacting the factory for warranty
information, be sure to have the dryer’s model
number and serial number available so that your inquiry
can be handled in an expeditious manner.
113245-4
No replacements, credits, or refunds will be issued
for merchandise damaged in transit.
!
No replacements, credits, or refunds will be issued
if the claim cannot be processed due to insufficient
information. The party filing the claim will be notified in
writing, either by “FAX” or “CERTIFIED MAIL – Return
Receipt Requested,” as to the information necessary to
process claim. If a reply is not received by the Warranty
Department within 30 days from the FAX/letter date, then no
replacements, credits, or refunds will be issued, and the
merchandise will be discarded.
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23
Routine Maintenance ________________
Cleaning
A program and/or schedule should be established for
periodic inspection, cleaning, and removal of lint from various
areas of the dryer, as well as throughout the ductwork system.
The frequency of cleaning can best be determined from
experience at each location. Maximum operating efficiency
is dependent upon proper airflow. The accumulation of lint
can restrict this airflow. If the guidelines in this section are
met, the dryer will provide many years of efficient, trouble
free, and most importantly, safe operation.
!
Warning
Lint from most fabrics is highly combustible. The
accumulation of lint can create a potential fire
hazard. Keep dryer area clear and free from combustible
materials, gasoline, and other flammable vapors and
liquids.
!
Suggested time intervals shown are for average
usage which is considered 6 to 8 operational
(running) hours per day.
!
Dryer produces combustible lint and must be
exhausted to the outdoors. Every 6 months,
inspect the exhaust ducting and remove any lint buildup.
SUGGESTED CLEANING SCHEDULE
Every Third or Fourth Load
Clean the lint screen every third or fourth load. A clogged lint
screen will cause poor dryer performance. The lint door/
drawer is located just below the loading door of the dryer.
Open the lint door/drawer, brush the lint off the lint screen,
and remove the lint. Inspect lint screen and replace if torn.
Note
The frequency of cleaning the lint screen can best
be determined from experience at each location.
Weekly
Clean lint accumulation from lint chamber, thermostat, and
microprocessor temperature sensor (sensor bracket) area.
Warning
To avoid the hazard of electrical shock,
discontinue electrical supply to the dryer.
Steam Dryers
Clean the steam coil fins. It is suggested that compressed
air and a vacuum cleaner with brush attachment be used.
24
90 Days
Remove lint from around tumbler, motor(s), and surrounding
areas.
Remove lint from gas valve burner area with a dusting brush
or vacuum cleaner attachment.
Clean any lint accumulation in and around the motor(s) casing
opening.
Note
!
To prevent damage, avoid cleaning and/or
touching ignitor/flame-probe assembly.
Inspect and remove lint accumulation in customer furnished
exhaust ductwork system and from dryer’s internal exhaust
ducting.
Note
Important
!
When cleaning steam coil fins, be careful not to
bend the fins. If fins are bent, straighten by using
a fin comb, which is available from local air conditioning
supply houses.
Every 6 Months
Note
!
!
Warning
!
The accumulation of lint in the exhaust ductwork
can create a potential fire hazard.
Do not obstruct the flow of combustion and ventilation air.
Check back draft dampers in the exhaust ductwork.
Inspect and remove any lint accumulation, which can
cause the damper to bind or stick.
A back draft damper that is sticking partially closed can
result in slow drying and shutdown of heat circuit safety
switches or thermostats.
When cleaning the dryer cabinet(s), avoid using harsh
abrasives. A product intended for the cleaning of
appliances is recommended.
Adjustments
7 Days After Installation
and Every 6 Months Thereafter
Inspect bolts, nuts, screws, setscrews, grounding
connections and nonpermanent gas connections (unions,
shutoff valves, and orifices). Motor and drive belts should be
examined. Cracked or seriously frayed belts should be
replaced. Tighten loose V-belts when necessary. Complete
operational check of controls and valves. Complete
operational check of all safety devices (lint door/drawer switch,
door switches, sail switch, burner and hi-limit thermostats).
Lubrication
The motor bearings, idler bearings, and under normal/most
conditions the tumbler bearings are permanently lubricated.
It is physically possible to relubricate the tumbler bearings if
you choose to do so even though this practice is not
necessary. Use Shell Alvania #2 grease or its equivalent.
The tumbler bearings used in the dryer do not have a grease
fitting. Provisions are made in the bearing housing for the
addition of a grease fitting, which can be obtained elsewhere
or from the manufacturer.
American Dryer Corp.
113245-4
Procedure for Functional Check
of Replacement Components ________
Microprocessor Controller (Computer) Board
Phase 7 Coin Models
Upon completing installation of the replacement
microprocessor controller (computer) board, reestablish
power to the dryer.
Phase 7 Non-Coin Models
Upon completing installation of the replacement
microprocessor controller (computer) board, reestablish
power to the dryer.
Start the drying cycle by pressing any of the preset cycles in
letters A-F.
Start the drying cycle by pressing any temperature selection
keys (HI, MED, or LO).
Verify that the applicable indicator lights on the
microprocessor controller (computer) board are lit. (Refer to
the illustration below.)
113245-4
Verify that the applicable indicator lights on the
microprocessor controller (computer) board are lit. (Refer to
the illustration below.)
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25
Data Label Information ______________
For Models with DSI Module (Type I)
Theory of Operation: Start the drying cycle. When the
gas burner ignites within the chosen trial for ignition time
(6-seconds), the flame sensor detects gas burner flame and
signals the DSI module to keep the gas valve open as long
as there is a call for heat. The DSI module will “LOCKOUT” if
the gas burner flame is not sensed at the end of the trial for
ignition period. The trial for ignition period will be repeated
for a total of 3 retries/trials (the initial try and 2 more retries/
trials). If the flame is not sensed at the end of the third retry/
trial (inter-purge period of 30-seconds) the DSI module will
“LOCKOUT” (L.E.D. diagnostic indicator flashes).
A steady L.E.D. indicator indicates normal operation. No L.E.D.
indicator indicates a power or an internal failure has occurred.
For Models with DSI Module (Type II)
When contacting ADC, certain information is required to
ensure proper service/parts information from ADC. This
information is on the data label affixed to the left side panel
area behind the top control (access) door. When contacting
ADC please have the model number and serial number
available.
1. Model Number – This describes the style of dryer and
type of heat (gas, electric, or steam).
2. Serial Number – Allows the manufacturer to gather
information on your particular dryer.
3. Manufacturing Code Number – The number issued
by the manufacturer, which describes all possible options
on your particular model.
4. Type of Heat – This describes the type of heat for your
particular dryer, gas (either natural gas or L.P. gas), electric,
or steam.
Theory of Operation: Start the drying cycle. When the
gas burner ignites within the chosen trial for ignition time
(8-seconds), the flame sensor detects gas burner flame and
signals the DSI module to keep the gas valve open as long
as there is a call for heat. The DSI module will “LOCKOUT” if
the gas burner flame is not sensed at the end of the trial for
ignition period. The trial for ignition period will be repeated
for a total of 3 retries/trials (the initial try and 2 more retries/
trials). If the flame is not sensed at the end of the third retry/
trial (inter-purge period of 30-seconds), the DSI module will
“LOCKOUT” (a red L.E.D. diagnostic indicator will flash).
An unlit red L.E.D. diagnostic indicator indicates normal
operation. A lit green L.E.D. diagnostic indicator indicates
dryer controller is calling for heat and that all interlocks have
been satisfied.
26
5. Heat Input (For Gas Dryers) – This describes the heat
input in British thermal units per hour (Btu/hr).
6. Orifice Size (For Gas Dryers) – Gives the number drill
size used.
7. Electric Service – This describes the electric service
for your particular model.
8. Gas Manifold Pressure (For Gas Dryers) – This
describes the manifold pressure taken at the gas valve
tap.
American Dryer Corp.
113245-4
Manual Reset
Burner Hi-Limit Instructions _________
Phase 7
This dryer was manufactured with a manual reset burner
hi-limit thermostat, which is monitored by the Phase 7
computer. If the burner hi-limit is open prior to the start of the
drying cycle, the dryer will start momentarily and then shut
down, the Phase 7 computer will display “BURNER HIGH
LIMIT FAULT” with an audio indication.
NOTES ______________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
If the burner hi-limit opens during a drying cycle, the Phase 7
computer will also display the same error code described
above, along with an audio indication. If the drum temperature
is above 100° F (38° C), the dryer will continue to run with no
heat for 3 minutes or until the drum temperature has dropped
below 100° F (38° C). For non-coin models, the clear/stop
button on the Phase 7 keypad must be pressed to clear the
error condition. For coin models, the pause key must be
held down for 3-seconds to clear the fault. The open burner
hi-limit must be reset “manually” prior to the start of the next
cycle.
_____________________________________________
Mechanical Timer
_____________________________________________
This dryer was manufactured with a manual reset burner
hi-limit thermostat. If the burner hi-limit is open prior to the
start of the drying cycle, or during the cycle, the dryer will not
recognize the open state of the burner hi-limit and will start or
continue through the drying cycle with no heat. Manual reset
hi-limit must be reset manually.
_____________________________________________
This hi-temperature condition may be caused due to a
restricted exhaust, poor airflow, or improper burner operation.
The location of the burner hi-limit is on the left side of the
burner box, looking at the burner from the back of the dryer.
Warning
!
Discontinue power to dryer before attempting to
reset hi-limit.
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
113245-4
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27
ADC Part No. 113245
4 - 04/14/05 - 40